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Offline japaneseTopic starter
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Join Date: Mar, 2010
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GARY PI
« Reply #10 on: December 02, 2010, 11:21:33 am »
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Hi TRX
        " the sound not bad,not good. "this mean  when detect small metal eg. 22cm at clear sound ,same metall at 26cm low sound ,no  problem with the sound .
best time
j.

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Offline barwildi
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« Reply #11 on: December 25, 2010, 12:52:04 am »
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japanese,

This looks like a very good and simple detector to build. However, to be complete I think it may need either an updated parts list or schematic as there are some discrepancies between them...

At first glance I see:

Schematic: R25=50k trim/pot   ...Parts List: R25=15k fixed resistor

Schematic: D7=1N5819   ...Parts List: D7=?


Regards


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Offline moja
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« Reply #12 on: July 20, 2016, 11:54:37 pm »
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hi all
i will make this pi but i have a problem with imput and output of this pi for example what are gain, tp, gnd?  Huh?
kann somebody help me?

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